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codes

In communications and information processing, code is a system of rules to convert information—such as a letter, word, sound, image, or gesture—into another form, sometimes shortened or secret, for communication through a communication channel or storage in a storage medium. An early example is an invention of language, which enabled a person, through speech, to communicate what they thought, saw, heard, or felt to others. But speech limits the range of communication to the distance a voice can carry and limits the audience to those present when the speech is uttered. The invention of writing, which converted spoken language into visual symbols, extended the range of communication across space and time.
The process of encoding converts information from a source into symbols for communication or storage. Decoding is the reverse process, converting code symbols back into a form that the recipient understands, such as English or/and Spanish.
One reason for coding is to enable communication in places where ordinary plain language, spoken or written, is difficult or impossible. For example, semaphore, where the configuration of flags held by a signaler or the arms of a semaphore tower encodes parts of the message, typically individual letters, and numbers. Another person standing a great distance away can interpret the flags and reproduce the words sent.

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  1. R

    Vaillant Sensohome and fault codes.

    Hello All I have an ecotec 630 with Sensohome controls. Should the fault codes shown in the boiler also be reflected in Sensohome control? All appears to be working ok but the Sensohome has a fault code relating to the outside sensor (F521) which I can't seem to clear. The sensor is working ok...
  2. P

    Halstead HE error codes

    Hi Two weeks ago I turned the hot water tap on and heard a clanging noise like a wheelie bin being dragged, the water went cold and boiler in the loft flashing 2. I turned it off and on again and it worked ok. Until a week later did the same thing again - I turned it off and on again it took...
  3. M

    URGENT Glowworm Flexicom 12hx error codes.

    Hi all, I am hoping someone can help me on this one. I have a Glowworm Flexicom 12hx boiler, currently getting two different error codes (F25 and F22). Landlord believes the boiler has lost pressure and needs topping up, but I have no way of checking the boiler pressure - no dial and no on...
  4. U

    Icos He30 combi boiler resolution L9/H9 fault codes

    My boiler is an Ideal Icos HE30 boiler. This supplies the central heating and a separate heat store - in other words a big cylinder - for domestic hot water. It is not a combi boiler. The boiler is 10 years old and it has been serviced by the original installer each year since installation. It...
    • Ulsinus
    • Thread
    • america boiler codes combi combi boiler fault he30 icos l9/h9 usa
    • Replies: 12
    • Forum: USA
  5. MrGatch

    Flow/Return Colour Codes

    Are the any standard colour-codes or conventions for labeling central heating, water and gas pipes? I'm looking at insulating the pipes in my cellar and am considering marking up the flow/return and H/C water pipes as I'm going along. Appreciate that yellow is for gas and possibly red/blue for...
  6. P

    Pex pipe-boiler: aerial distance

    I am adding radiators to my 2-pipe central heating. The whole piping is copper 22mm and microbore, and I'm extending it with 15mm pex barrier pipe graded for CH. I know that the first bit of pipes connected to the boiler must be copper, which is the case. However, I couldn't find whether there...
  7. D

    Reliability of fault codes potterton

    HELP!,,,, E125 error code Been trying to get to the bottom of problem with potterton titanium 40. keep getting e125 which is circulation fault ( primary circuit). Fault is intermittent. Thought about system flush but seem am reluctant as all rads are red hot. Return pipe also hot. Fault...
    • Deleted member 113501
    • Thread
    • code codes fault potterton reliability
    • Replies: 51
    • Forum: Central Heating Forum
  8. C

    Boiler Error Codes Linea HE

    Hi all. Wonder if someone here might be able to assist with some advice. I have a Linea HE boiler from Vokera and I’m getting the following error indicators. I have no idea what’s going on. Basically the boiler just keeps cutting out. I thought it was a pressurisation issue but the boiler...
  9. M

    U codes on Worcester boilers

    Morning all. I have a Worcester greenstar which keeps giving U codes by counting up to 9. Cannot see these codes in the manual. Any ideas? Cheers
  10. Robert Tyrrell

    Potterton Icos error codes?

    Got a Potterton Icos system HE24 and it's not firing so some advice please I have followed the MI and as a result I've replaced the ignition transformer as there was no spark at all. I got it sparking but it wouldn't stay lit so next was the flame sensing device and lead. Now it doesn't spark at...
  11. Lambed84

    Baxi DuoTec fault codes

    Anyone know what the fault code e166 relates to on the above boiler? Thanx in advance gents
  12. Dan

    No Need for Wickes Voucher Codes

    Just had an email about these offers from Wickes. Not sure if they're anything you'd be interested in but thought I'd share anyway just in case. 15% off Tiles and Flooring In store and Online Up to £100 off Bosch Blue products 20% off Mixer showers and taps Up to 33% off RTF kitchens plus...
  13. O

    serviceplus s17r problem

    Hi. I've just bought a flat at auction, the boiler system was installed around April according to paperwork, I can get hot water although no central heating! The thermostat has no red light when turned on and the timer switch is asking me to contact a service engineer. I know from looking up...
  14. Kewat66

    Worcester CDI U Codes

    Hi All, i have been working on a Worcester 35 CDI. The boiler wasn't getting the heat away and was going up to 99 on the screen and then going into u codes. Nothing in the manual on these but having changed the pump, diverter motor & temp sensor the boiler worked for a week then started playing...
  15. B

    baxi E168 fault codes

    and what to check,i am now a official installer and have the book the service engineers use,be warned when faced with E168 faults its not always the pcb if anyone wants the checks to make pm me your email addy as its a word document and i cant upload it here files to big
  16. hammers4spanner

    fault codes

    Why is it do custs always think you know every fault code on every boiler off the top off your head , quite often get text messages or phone calls saying ' Hi i have a boiler showing fault code F 24 or e123 what is it and can you repair it now?' These calls are often late at night as if i can...
  17. W

    Ideal imax in depth fault codes

    Hi, Do any of you clever chaps have the in depth fault codes for an Imax. The mi's are vague to say the least. Preferably E04 and not in the book E08..Cheers.
  18. N

    urgent help, ICOS HE12 not working, no error codes, no display

    Hi guys, I have ICOS HE12, something happened with it, few days back i lost the indication in the display, the hot water and heating were working but i noticed the heating was less and water took time to be heated Today the boiler started not working, no hot water , no heating, no indication in...
  19. B

    baxi duotec 1/hea/plat/heatmax/promax/gold/titanium fault codes

    Code NumberDescriptionCommentGuidance in Installation InstructionsAdditional Checks Before PCB Swap● Check Gas supply and flue system correct (including condensate) .● Check connection between Gas Valve and PCB (large clear 9 wire connector).● Check connection between Spark Generator and PCB...
  20. J

    worcester bosch fault codes

    got a fault on a worcester bosch heat slave 20/25, the code is 9f flashing on the screen. tried resetting the main one on the boiler, reset on the overheat stat and also on the burner, no avail. if anyone could point me in the right direction of some fault codes that would be excellent. cant...
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